Pipe-covering.



c. M. STOKES. PIPE COVERING. APPLICATION FILED JUNE 27' I910.

Patented Apr. 27, 1915.

I I N VENTOR Clam/we J1. 7 530/265 ATTORNEY FC *i CLARENCE M. STOKES, OFNORRI STOWN, PENNSYLVANIA.

PIPE-COVERING.

To all whom it may concern Be it known that I, CLARENCE M. S'roKEs, acitizen of the United States, residing at Norristown, in the county ofMontgomery and State of Pennsylvania, have invented a certain new anduseful Improvement in Pipe-Coverings, of which the following is aspecification.

My invention relates to a new and useful improvement in pipe coverings,and has for its object to construct a device of this character of anumber of ribbons of suitable insulating material, said ribbons beingspirally wound,vone upon the other so that the uppermost ribbon alwaysoverlaps the joints of the ribbon beneatli.

In accomplishing the above named objects I cut an insulating materialsuch as Wool or shoddy felt paper, known to the trade as deadening felt,into relatively long and narrow strips or ribbons. I then take a numberof these ribbons and wind them spirally, one upon top of the other,using as many ribbons as necessary to produce the finished article ofthe desired thickness. Each outermost ribbon is so wound that itoverlaps or covers the joints formed'by the inner ribbon, thuspreventing the radiation of heat which would occur if the joints were inalinement. In practice, any desired insulating material may be used, ora number of insulating materialsmay be combined, that is, the

inner ribbon may be of asbestos, the next may be of wool felt, anotherof tar felt and so on, using any suitable insulating material, and iffound desirable these ribbons may be corrugated so that when they arewound together air spaces will be formed which prevent the radiation ofheat in a very effective manner.

With these ends in view, this invention consists in the details ofconstruction and combination of elements -hereinafter set forth and thenspecifically designated by the claims.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, I will describeits construction in detail, referring by letter tothe accompanyingdrawings Specification of LettersPatent.

Patented Apr. 27, 1915.

Application filed June 27, 1910. Serial No. 569,080.

forming a part of this specification, in

which- Figure 1 is a perspective view showing plain fabric used in theconstruction of the pipe; and Fig. 2, is a similar view, illustrating amodification.

In carrying out my invention as here embodied, A represents one of anumber of ribbons of insulating material, which are spirally wound oneupon the other forming layers until the desired thickness of thecovering is obtained, each succeeding ribbon covering or overlapping thejoints B formed by the preceding ribbon. In winding these ribbons anadhesive material, such as corn starch, silicate of soda or acomposition of rubber, is placed between each pair of ribbons so thatthey always remain securely in position. The ribbons from which thecovering is made are of deadening felt, (a paper,

made from wool or shoddy) asbestos, tar felt or any other suitableinsulatmg material, and when making a covering all of the ribbons may beof any one of the insulating materials or two or more different1nsulating materials may be used.

In Fig. 2, I have shown the several layers of fabric corrugatedlongitudinally to form air spaces when the several layers are assembled,and to increase the insulatmg properties of the pipe.

To place the covering upon a p1pe, 1t is cut or split longitudinally,then placed about the pipe and covered with canvas or a sheeting jacketpasted down to form a finish and also to.hold the covering in place uponthe pipe. This sheeting jacket is used upon all P p E-rings of thepresent day, and it is therefore thought unnecessary to illustrate ordescribe the same in detail.

Having thus fully described my lnvention, what I claim as new anduseful, iS

1. A pipe covering consisting of a spirally longitudinally as and forthe purpose set said covering being split longitudinally for forth. thepurpose described.

2. A pipe covering consisting of a spirally In testimony whereof, I havehereunto wound corrugated strip of insulating maaffixed my signature inthe presence of two 6 terial, a secpnd corl'i'ugated strip ofinsufllatsubscribing witnesses.

in materia s ira wound about the rst na med strip aiidso disposed as tooverlap CLARENCE STOKES the joint formed by the winding of the firstWitnesses:

named strip, and an. adhesive disposed be- S. M. GALLAGHER,

' 10 tween said strips for securing them together, EDW. W. AUSTIN.

